5421971811312 has 240 divisors, whose sum is σ = 17689681028032. Its totient is φ = 1518233518080.

The previous prime is 5421971811307. The next prime is 5421971811337. The reversal of 5421971811312 is 2131181791245.

5421971811312 is a `hidden beast` number, since 5 + 421 + 97 + 1 + 8 + 1 + 131 + 2 = 666.

It is a super-2 number, since 2×5421971811312² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16873008 + ... + 17191344.

Almost surely, 2^{5421971811312} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5421971811312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8844840514016).

5421971811312 is an abundant number, since it is smaller than the sum of its proper divisors (12267709216720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5421971811312 is a wasteful number, since it uses less digits than its factorization.

5421971811312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318696 (or 318687 counting only the distinct ones).

The product of its digits is 120960, while the sum is 45.

The spelling of 5421971811312 in words is "five trillion, four hundred twenty-one billion, nine hundred seventy-one million, eight hundred eleven thousand, three hundred twelve".